Index: src/uk/me/parabola/mkgmap/reader/overview/OverviewMapDataSource.java
===================================================================
--- src/uk/me/parabola/mkgmap/reader/overview/OverviewMapDataSource.java	(revision 1088)
+++ src/uk/me/parabola/mkgmap/reader/overview/OverviewMapDataSource.java	(working copy)
@@ -45,7 +45,7 @@
 
 	// TODO need to change this.
 	private final int topLevel = 5;
-	private final int topBits = 14;
+	private final int topBits = 15;
 
 	/**
 	 * This is a fake source of data and is not read from a file, so always
@@ -132,6 +132,7 @@
 	 * @param shape The polygon to add.
 	 */
 	public void addShape(MapShape shape) {
+		System.out.printf("shift for overview " + getShift());
 		mapper.addShape(shape);
 	}